:root {
  --primary: #4F46E5;
  --primary-light: #818CF8;
  --primary-dark: #3730A3;
  --bg: #F9FAFB;
  --bg-card: #FFFFFF;
  --text: #111827;
  --text-secondary: #6B7280;
  --border: #E5E7EB;
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px; border-radius: var(--radius); border: none;
  font-size: 14px; font-weight: 500; cursor: pointer;
  transition: all 0.2s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-secondary { background: var(--bg); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { opacity: 0.9; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-lg { padding: 12px 24px; font-size: 16px; }

/* Forms */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 4px; font-size: 14px; font-weight: 500; color: var(--text-secondary); }
.form-input {
  width: 100%; padding: 8px 12px; border: 1px solid var(--border);
  border-radius: var(--radius); font-size: 14px; outline: none;
  transition: border-color 0.2s;
}
.form-input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,0.1); }
select.form-input { appearance: auto; }
textarea.form-input { resize: vertical; min-height: 80px; }

/* Cards */
.card {
  background: var(--bg-card); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 20px;
}

/* Tables */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); font-size: 14px; }
th { font-weight: 600; color: var(--text-secondary); background: var(--bg); }
tr:hover { background: #F3F4F6; }

/* Badges */
.badge {
  display: inline-block; padding: 2px 8px; border-radius: 12px;
  font-size: 12px; font-weight: 500;
}
.badge-active { background: #D1FAE5; color: #065F46; }
.badge-disabled { background: #FEE2E2; color: #991B1B; }
.badge-free { background: #E0E7FF; color: #3730A3; }
.badge-pro { background: #FEF3C7; color: #92400E; }
.badge-enterprise { background: #DBEAFE; color: #1E40AF; }

/* Modal */
.modal-overlay {
  display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5); z-index: 1000;
  justify-content: center; align-items: center;
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--bg-card); border-radius: 12px; padding: 24px;
  width: 90%; max-width: 560px; max-height: 80vh; overflow-y: auto;
  box-shadow: var(--shadow-lg);
}
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.modal-header h3 { font-size: 18px; }
.modal-close { background: none; border: none; font-size: 24px; cursor: pointer; color: var(--text-secondary); }

/* Pagination */
.pagination { display: flex; gap: 4px; justify-content: center; margin-top: 16px; }
.pagination button {
  padding: 6px 12px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--bg-card); cursor: pointer; font-size: 13px;
}
.pagination button.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination button:disabled { opacity: 0.5; cursor: not-allowed; }

/* Toast */
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 2000; }
.toast {
  padding: 12px 20px; border-radius: var(--radius); margin-bottom: 8px;
  color: #fff; font-size: 14px; animation: slideIn 0.3s ease;
  box-shadow: var(--shadow-lg);
}
.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }
.toast-info { background: var(--primary); }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* Stats cards */
.stat-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: var(--bg-card); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.stat-card .label { font-size: 13px; color: var(--text-secondary); }
.stat-card .value { font-size: 28px; font-weight: 700; color: var(--text); margin-top: 4px; }

/* Flex utilities */
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-center { display: flex; justify-content: center; align-items: center; }
.gap-8 { gap: 8px; }
.gap-16 { gap: 16px; }
.mt-16 { margin-top: 16px; }
.mb-16 { margin-bottom: 16px; }
.text-center { text-align: center; }
.text-sm { font-size: 13px; }
.text-muted { color: var(--text-secondary); }

/* Loading */
.loading { text-align: center; padding: 40px; color: var(--text-secondary); }
.spinner { display: inline-block; width: 24px; height: 24px; border: 3px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin 0.6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Empty state */
.empty { text-align: center; padding: 60px 20px; color: var(--text-secondary); }
.empty svg { width: 64px; height: 64px; margin-bottom: 16px; opacity: 0.3; }